Chromium (total)

Citrus Springs

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	1.32 ppb	18	18	0.450 ppb - 3.90 ppb
2015	0.640 ppb	12	12	0.580 ppb - 0.740 ppb
2016	N/A	0	0	N/A
2017	ND	6	0	ND
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date	Result
2014-04-09	3.90 ppb
2014-04-09	1.90 ppb
2014-04-09	2.10 ppb
2014-04-09	3.20 ppb
2014-04-09	3.60 ppb
2014-04-09	2.70 ppb
2014-08-19	0.450 ppb
2014-08-19	0.450 ppb
2014-08-19	0.460 ppb
2014-08-19	0.460 ppb
2014-08-19	0.470 ppb
2014-08-19	0.670 ppb
2014-08-19	0.480 ppb
2014-08-19	0.470 ppb
2014-08-19	0.590 ppb
2014-08-19	0.690 ppb
2014-08-19	0.470 ppb
2014-08-19	0.760 ppb
2015-02-11	0.670 ppb
2015-02-11	0.650 ppb
2015-02-11	0.680 ppb
2015-02-11	0.680 ppb
2015-02-11	0.740 ppb
2015-02-12	0.590 ppb
2015-02-12	0.710 ppb
2015-02-12	0.590 ppb
2015-02-12	0.590 ppb
2015-02-12	0.590 ppb
2015-02-18	0.610 ppb
2015-02-18	0.580 ppb
2017-05-18	ND
2017-05-23	ND
2017-05-24	ND
2017-05-25	ND
2017-05-25	ND
2017-05-31	ND